The branch of mathematics that is applied when working on convoluted theories of everything and hipster sums, such as string theory and the P = NP problem, respectively. Mathematicians and Scientists who work within the field of Mushroom Mathematics employ a number of techniques, including, but not limited to: pulling Greek letters out of a hat, pin the equation on the blackboard, spin the number-wheel, and automatic writing. Typically, numerous narcotics will also be used to aid in the 'calculations'. These include magic mushrooms, LSD, and cannabis.